Process of producing matches.



STATES ASSIGNOR TO soREN LEMVIG SAME PLACE.

FOG AND AAGE GEORG KIRSOIINER, OF

PROCESS OF PRODUCING MATCHES.

SPEQIFIGATION forming part of Letters Patent No. 676,873, dated June 25, 1901.

Application filed January 19, 1900.

same No. 1.963. (No specimens.)

To all whom it mag concern:

Be it known that I, CARL CHRISTIAN LE- POLD GETHER BUDDE, a subject of the King of Denmark, residing at Copenhagen, in the Kingdom of Denmark, have invented certain new and useful Improvements in Processes of Producing Matches Ignitib'le on All Surfaces without Using Phosphorus, (for which I have applied for patents in Germany, dated December 1-1, 1899; in Denmark, dated December 18, 1899, and in France, dated December 27, 1899,) of which the following is a specification.

Repeated attempts have been made to renr 5 der the use of phosphorus unnecessary in the manufacture of matches. Most of the matches that are said to be made without phosphorus do, indeed, contain the so-called red or amorphous phosphorus, or a prepared surface containing this red phosphorus is required for igniting them.

The. object of the present invention is a process of making matches without phosphorus, said matches being ignitible on all z 5 surfaces.

By this invention a long-desired end is obtainedthat is, the necessity of using phosphorus is entirely removed from the matchmaking industry. This desired end is ob- 0 tained when a portion of the chlorate of the usual igniting composition, containing chlorate of potassium or other chlorate ofthe alkali group and bichroinate of potassium or other .bichromate of a monovalent metal such as bichromatebf sodium, bichromate of ammonia, or the likeis replaced by the chlo-- rate of a divalent or polyvaleut metal-as, for example, chlorate ofi barium, chlorate ofcalcium, chlorate of strontium, or chlorate of 40 lead.

In carrying out this invention two different courses may be taken:

First, a so-called headless match is made 1 by dipping the wooden or other splint, previously impregnated with water, into a hot eoncentrated solution of the chlorate of a divalent or polyvalent metal. The object of impregnatingthe splints with water is to prevent the chlorate from rising higher in the same than the point to which they are dipped. The splints thus impregnated with the chlorate could be ignited by rubbing them on a prepared surface containing red phosphorus. The impregnated end of the splint is nowoovercd by a thin skin or coating of some igniting composition, which, besides the other constituent parts used for such purposes, must contain bichromate ofpotassinm or other bichromate of'the alkali group. When dry, a

match is obtained that can be ignitedon all .60

surfacesforexample,on cloth,tl1e wall,wood, or. the like. The purpose of the present invention is not obtained by using the chlorate of a metal of the alkali group instead of the chlorate of a divalent or polyvalent metal for impregnating the splints. It is, for example, of no use to impregnate the splints with potassium chlorate and to then apply the com position containing the bichromate to the impregnatedend. This fact can be easily ex- 7'0 plained by the fact that in the chlorates of the metals of the alkali group (in which group the metals are without exception monovalent) the chloric acid is held much stronger than in the chlorates of the divalent or polyvalent metals-as, for example, the alkaline-earth group. With a chlorate of the alkaline-earth group orof some suitable metal-for example, chlorate of leadthe chloric acid is therefore much more easily separated than with a chlorate of the alkali'group. It has been found that of allsalts the combination of chlorate of barium with bichromateof potassium is the best. The spli nts after being saturated with water are impregnated with chlorate of barium,'and an igniting composition -containing bich romate of potassiumis then applied to the impregnated end. The following combination has proved to form a very suitable composition, viz: 2i. 5 parts chlorate of potassium, go

9.6 parts sulfur, ten parts oxid of copper, five partsrbich romate of potassium, andtive parts glue or-other adhesive. The various constituent-parts can of course be varied. Feh'example, chlorate of potassium can be wholly or partly replaced by chlorate of sodium, or instead of sulfur a -s nlfid of antimony may be used, and so on. When chlorate ofsodium .is 'used,a suitable 'a'gent -such as parafiin, resin, orsuch-like must be added 1n order .to overcome its hygroscopic property,

- By proceeding in the manner above deffscribed a match is obtained without apro- 'ectin i nition-head as the i nitin compoa a a z: a

sition applied to the splint after-it is impregnated with the chlorate need only be very thin.

I Second. It is also possible to proceed by mixing-4'01 example, in a paste-without'dissolving the chlorate of the'divalent or polyvalent metal with the igniting composition containing'the bichromate of a monovalent metal and to dip the paratiined splints into this mass, which should further contain some adhesive.

-e This invention consrststherefore, essen-,

v tially; in the combination of a chlorateof a divalentor polyvalentmetal With one or more bieliromates of the alkali group. When these requirements are not complied with, the purpose .of the invention cannot be realized.

\Vhat I claim, a-nd desire to secure by Letters'Patentofthe United States, is-

l;. Animprovedprocess of manufacturing matches-consisting in internally impregnating the matchsplint witha chlorate of a metal of-- gluralvalehce and externally coating the 'en of-the-matchsplint with abichromate of a monovalent metal, substantially as set'forth. 2;, Animprovedprocess of manufacturing matches consisting in first saturating the splint withwater, thenjlnpregnati'ng its end withahalogen oxy-saltof a divalent metal and snbsequently applying a bich'romate of a m'opovalentmetal, substantially as set forth. 3. Ari-improved process of manufacturing matches consisting in mixing without com.- bining chlorate of barium and bichromate of potash, and applying them to a solid body,

to wit, a match-splint of combustible material, substantially as set forth.

4. An improved process of manufacturing matches consisting in combining together in close association, but not in chemical combination, the combustible material of the end of the match-splints and chlorate of barium,

'chlora-te of potassium, bichromate of potass'ium, sulfur, and oxid of copper, substantially as set forth 7 5. An improved process .of manufacturing imatches consisting in impregnating a portion of thematch-splints with a halogen oxy salt of a divalent metal and subsequently coating with an igniting material, substantially as set forth.

6. An' improved process ofmahufactur'ing matches consisting in impregnating a portion of the matclnsplints with chlorate of barium and subsequently coating them with igniting material, substantially for the purposes 'described. I

7. An improved process of manufacturing 

